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Forum Index : Microcontroller and PC projects : Micromite and speech synthesiser chip

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Herry

Senior Member

Joined: 31/05/2014
Location: Australia
Posts: 261
Posted: 07:17am 11 May 2020
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Hs anyone successfully mated a though hole speech synthesis chip with a Micromite, or even mated audio wave files with one. I've built and programmed a Micromite speed limit monitor and would like to replace alert beeps with voice!

I should add that I am using an early 'Standard' Micromite chip.
Edited 2020-05-11 17:24 by Herry
Senior?!  Whatever it says, I'm a complete and utter beginner...
 
CaptainBoing

Guru

Joined: 07/09/2016
Location: United Kingdom
Posts: 2171
Posted: 08:33am 11 May 2020
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My solution a few years ago was to create samples for the phrases I wanted and then play them from a DFPlayer - those little MP3 players with a serial interface and SD Card. still got several working today.

The quality of the speech is very clear, depending how loud you want it, you might need a further amp on the output and you are away. Agreed it is only playing samples so not as flexible as true TTS but the end result was very good.

Example DF Player on ebay

Good Voice sample creating

sample of four multi-language message I created. These were used in my customer feedback pods to convey a suitable message in the loos and remote areas (where an alrm may be heard only distantly)
evac voices.zip

I must say that the above voices, while excellent do sound a bit "deadened" and is some cases I processed the audio further by adding a little bit of echo - you can hear this on the test announcement.

For the foreign language samples; my language skills are schoolboy at best so I relied on google translate to give me Rachael's lines in the required tongue then fed them into the correct language/voice in NR. They are all female as research has shown people tend to listen more intently to announcements in female voices... make of that what you will I don't know if they still do it but I heard the USAF used to sample a pilots children for the flight systems to give critical messages, apparently the pilot is more likely to deal correctly with a situation if his daughter announces "your left engine's on fire Daddy"

hth
Edited 2020-05-11 18:50 by CaptainBoing
 
Canada_Cold
Regular Member

Joined: 11/01/2020
Location: Canada
Posts: 48
Posted: 02:55pm 11 May 2020
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Hi,

I’ve used the Text-to-speech board, V8600A voice synthesizer from RC Systems Inc. (https://www.rcsys.com/modules.htm) in several of my projects.   The modules are not cheap, costing about $89 US each.  However, they create excellent results with clear voice in English.  They interface via a com port at 9600 baud, TTL signal levels.  So a connection to COM 1 or 2 on a 28 pin Micromite is a good solution.   The text-to-speech is excellent, there are several voices to choose from, however I generally use the default voice.   The board has a built in serial buffer, and an on board audio amp.  If the unit is being used in a multi room building, I run the audio output into a distribution amp.  I have one system installed in a location for more than 10 years announcing when doors are opened or closed as a audio security system.

Hope this helps, have fun.
 
lizby
Guru

Joined: 17/05/2016
Location: United States
Posts: 3470
Posted: 03:53pm 11 May 2020
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I don't know if it would be sufficient on its own, or would suit your needs if mated with a micromite, but the ESP- and ESP32-based Annex Rapid Development system supports the SAM text-to-speech system: https://sites.google.com/site/annexwifi/projects/sam-speaker-network
PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed
 
Turbo46

Guru

Joined: 24/12/2017
Location: Australia
Posts: 1646
Posted: 04:14pm 11 May 2020
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Have you seen this post?

Bill
Keep safe. Live long and prosper.
 
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